Labthink C230H Tri-Chamber Isostatic Oxygen Transmission Rate (OTR) Tester
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Region Classification | Domestic (China) |
| Model | C230H |
| Price Range | USD 14,000 – 85,000 |
| Test Principle | Coulometric Oxygen Sensor + Isostatic (Equal-Pressure) Method |
| Standards Compliance | ASTM D3985, ASTM F1307, GB/T 19789, GB/T 31354, DIN 53380-3, JIS K7126-2-B, YBB 00082003-2015 |
| Test Range | 0.01–200 cm³/(m²·day) (film) |
| Resolution | 0.001 cm³/(m²·day) |
| Repeatability | ±0.01 cm³/(m²·day) or ±2% (whichever is greater) |
| Test Temperature | 10–55 °C ±0.2 °C |
| Test Humidity | 0% RH, 5–90% RH ±1% RH, 100% RH |
| Chamber Count | 3 |
| Sample Size | 108 mm × 108 mm |
| Max Sample Thickness | ≤3 mm |
| Standard Test Area | 50 cm² |
| Carrier Gas | ≥99.999% high-purity N₂ (user-supplied) |
| Inlet Pressure | ≥0.28 MPa (40.6 psi) |
| Gas Interface | 1/8″ stainless steel tubing |
| Optional Modules | Package Testing (up to 3 L), DataShield™ Data Integrity System, CFR 21 Part 11 Compliance Package, GMP Computer System Validation Support |
Overview
The Labthink C230H Tri-Chamber Isostatic Oxygen Transmission Rate (OTR) Tester is an engineered solution for precise, reproducible quantification of oxygen permeation through polymeric films, laminates, coated papers, and rigid or semi-rigid packaging containers—including instant noodle plastic bowls. It operates on the isostatic (equal-pressure) method, where oxygen diffuses across a test specimen under controlled partial pressure differential, and is detected via a high-stability coulometric oxygen sensor. This principle ensures trace-level sensitivity and long-term baseline stability—critical for validating barrier integrity in shelf-life-critical applications. Designed in strict alignment with ASTM D3985 (for planar materials) and ASTM F1307 (for package-level testing), the C230H delivers metrologically sound data required for regulatory submissions, quality control release protocols, and material development workflows in food, pharmaceutical, medical device, and consumer electronics packaging.
Key Features
- Tri-chamber architecture enables simultaneous OTR measurement of three identical specimens (for statistical replication) or three distinct materials under identical environmental conditions—supporting ISO/IEC 17025-compliant parallel testing requirements.
- Patented monolithic test block integrates thermal-fluidic optimization to minimize inter-chamber variance in temperature (±0.2 °C), humidity (±1% RH), and gas flow dynamics—ensuring cross-chamber measurement equivalence.
- Independent chamber-level温湿度 sensors (temperature & relative humidity) provide real-time feedback for closed-loop environmental regulation—eliminating spatial gradients that compromise diffusion kinetics fidelity.
- Automated climate control system maintains user-defined T/RH setpoints without manual intervention across full operational ranges (10–55 °C; 0–100% RH).
- 12-inch industrial-grade Windows 10 touch interface with embedded high-performance processor enables both rapid automated test execution and granular manual parameter tuning—suitable for routine QC labs and R&D environments.
- DataShield™ embedded data governance framework enforces ALCOA+ principles: attributable, legible, contemporaneous, original, accurate—with audit trail, electronic signature support, and export compatibility for CSV, PDF, XML, and LIMS integration.
Sample Compatibility & Compliance
The C230H accommodates flat specimens up to 108 mm × 108 mm and ≤3 mm thickness, with standardized 50 cm² test area. For package-level assessment—including cup-shaped instant noodle containers—the system supports volumetric testing of units up to 3 L using internal nitrogen purge and external oxygen exposure configuration. All hardware and firmware comply with design controls per ISO 13485 and ICH Q5C for medical packaging validation. Software modules are configurable to meet FDA 21 CFR Part 11 requirements—including role-based access control, electronic signatures, and immutable audit logs—facilitating GxP-aligned deployment in regulated manufacturing sites.
Software & Data Management
The instrument’s native software provides dual-mode operation: “Quick Mode” for SOP-driven batch testing with preloaded methods and pass/fail thresholds; and “Advanced Mode” offering full control over gas flow rates, sensor zeroing intervals, stabilization criteria, and custom calculation algorithms. DataShield™ ensures raw sensor outputs, environmental logs, calibration records, and user actions are cryptographically timestamped and stored in tamper-evident format. Export options include GLP-compliant PDF reports with embedded metadata (operator ID, instrument serial, calibration status, environmental traceability), as well as structured CSV/XML for enterprise data lakes or statistical process control (SPC) platforms.
Applications
- Quantitative OTR verification of thermoformed PP/PS bowls used in ambient-stable instant noodle packaging.
- Comparative barrier performance evaluation of metallized PET, SiOₓ-coated films, and EVOH-containing laminates under accelerated aging conditions.
- Package-level OTR validation for sealed trays, pouches, and blister cards prior to stability protocol initiation (ICH Q1A–Q1E).
- Root cause analysis of shelf-life failures linked to oxidative rancidity in lipid-rich snacks or vitamin degradation in fortified foods.
- Supplier qualification and incoming material inspection against contractual OTR limits (e.g., ≤5 cm³/m²·day at 23 °C/0% RH).
FAQ
What standards does the C230H directly support?
ASTM D3985 (film), ASTM F1307 (package), GB/T 19789 and GB/T 31354 (Chinese national standards), JIS K7126-2-B, DIN 53380-3, and YBB 00082003-2015 (Chinese pharmaceutical packaging standard).
Can the system test irregularly shaped cups without custom fixtures?
Yes—the package test mode uses internal nitrogen flow and external oxygen exposure geometry compatible with standard cup dimensions up to 3 L volume; no fixture machining is required for nominal instant noodle bowl profiles.
Is carrier gas supply included with the instrument?
No—users must provide ≥99.999% high-purity nitrogen at ≥0.28 MPa inlet pressure; Labthink supplies all internal regulators, filters, and stainless-steel gas manifolds.
How is measurement traceability maintained?
Each test run embeds NIST-traceable sensor calibration certificate IDs, chamber-specific environmental logs, and operator-authenticated method parameters—fully retrievable for regulatory audits.
Does the system support remote monitoring or network integration?
Yes—standard Ethernet and optional Wi-Fi enable secure LAN connectivity; APIs and OPC UA support allow integration with MES, SCADA, or centralized lab informatics platforms.
